Embroidery-machine.



W. HUELLER & M. KRAPP.

' EMBROIDERYMACHINE. APPLICATION FILED MAR.22.1915- 2 SHEETS-SHEET l.

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Patented Apr. 15,1919.

W. HUELLER & M. KRAPP. EMBROIDERY MACHINE. APPLICATION FILED MAR 22.1915.

Patented Apr. 15,1919.

2 SHEETS-SHEET 2- ATTORNEY TED srnrns n WALTER HUELLER, OE WEEHAWKEN,AND MAX-KRAPP, OF UNION HILL, NEW JERSEY.

EMBROIDERY-MACHINE.

Specification of Letters Patent.

Patented Apr. 15, 1919.

Application filed March 22, 1915. Serial No. 16,263.

To all whom it may concern;

Be it knownthat W8,WALTER HUELLER, acitizen ofthe German Empire, andresiding atWeehawken, in the county of Hudson and State of New Jersey,and MAXKRAPP, a citizen of the United States, and residing at UnionHill,in the county of Hudson and State of New Jersey, have invented certainnew. anduseful Improvements in EmbroideryelVIachin'es', of which thefollowing is a specification. p

This invention relates to improvements in and relating to embroiderymachines, and has .for its object to provide automatic enlarging meansand means whereby the pantograph action used in connection with theembroidery machines and the apparatus for making jacquard cards to beused in such machines may be so carried out as to have a minimum offriction, and thereby enable moreaccurate and quicker work than hasheretofore beenpossible. In the use of pantographs such as thoseheretofore used on embroidery machines, considerable energy is necessaryon the part of the operator, to manipulate the handle of the pantograph,and the pantograph itself, so that the muscles of the operator becamefatigued, and in consequence, it has been found that not only does thepantograph lack sensitiveness, but that those skilled in the action of.panto-v graphs and the art of manipulating the same have only alimitedlife of usefulness in view of the exacting nature of theservices.

The object of the present invention, therefore, is to render the actionofthe pantograph so delicate that it may, be readily 'movedwithouttheslightest fatigue, and at the same time, be very accurate. Afurther object is to provide such a device which may be adaptable in itsuse to a number of purposes; for instance, to operate a single machineof the present type; to operate a number of machines simultaneously bythe use of a single pantographg'to operate a jacquard card punchingmachine; to make enlarged drawings from original designs; and othersimilar uses'may beresorted to, Which will become obvious from thefollowing disclosure.

With these and other objects in view, our invention comprises the novelfeatures, arrangements and combinations of parts, hereinafter more fullydescribed with reference Fig. 2 is a similar view showing a modifiedform of construction, in which a sample frame is in cooperation with thepantograph; and

Fig. 3 shows a form of symmetrical design made by one embodiment of ourinvention.

Similar reference characters indicate corresponding parts throughout theseveral figures of the drawings;

Referring to the drawings, and more particularly to Fig. 1, the sampleor design 10, which is applied .to the stationary frame 11, serves as aguide for the operation of the machine, as is well known. In a planeparallel with the plane of the frame 11, which supports the design'orsample 10, the pantograph frame 12 is provided, which is delicatelysupported so that the slightest movement thereof, either vertically upor down, or horizontally to the left or right will be transmitted.

The pantograph frame 12 is provided at its lower end with a magnifyingglass 13, through which a pointer 14 is visible, which pointer 14.-follows the design or the threads of the sample. A handle 15 serves toenable the frame to be moved. Above the magnifying glass 13 and handle15, a horizontal slotted bar 16 is provided, in which rollers 17 and 18are freely movable, which rollers 17 and 18 are secured to members 19and 20, which in turn are part of segments 21 and 22, which are pivotedat 23 and 24. To each of the segments 21 and 22 a guide rope or cable 25and 26 is secured, which guide ropes or cables pass over springactuateddrums 27 and 28 at the upper part of "the frame, and pass over guidepulleys 29 and 30. It will be noted that the movement of the guiderollers'17 and 18 may freely take place in the slotted bar 16 it willcarry the rollers 17 and 18 and move the segments 21 and 22 around theirpivots 23 and 24, and hence move the guide ropes or cables 25 and 26correspondingly. As the segment 22 is moved, the pointer 31, secured to.the shaft 24, moves with it, and this pointer moves over an arc-shapedbar 32. The bar 33 is formed of insulating material, and contact members40 areprovided in spaced relation thereon, and are adapted to beindividually and successively engaged by the pointer 31 during itsmovement. ires 41 connect the contact members 40 respectively with aplurality of electromagnets 34, which are grounded upon a plate 44arranged concentrically about a wheel 35 mounted upon a shaft 35, uponwhich there is provided a bevel gear 36 which engages a bevel gear 37,mounted upon a shaft 37 which is operativelv connected to the frame ofthe embroidery machine or other mechanism (not shown) to be operatedcorrespondingly to the movement of the frame 45.

The bar 32, which is of conducting material, is connected by a wire 43,in, which there is arranged a source of electricity 43 to the plate 44upon which the electromagnets 34 are grounded by means of a con nection44, provided on an arcuate plate 44. Thus the electromagnets areindividually and successively energized as the pointer 31 moves from onecontact point 40 to the next. The armatures 35 are provided on theperiphery of the wheel 35, which are attracted by the energizedelectromagnets 34, moving from one to the next as they are successivelyenergized, thereby turning the wheel 35.

When, however, the handle 15 is pressed so as to guide the frame 12either from the left to the right or from the right to the left, theslottedportion 16 of the frame 12 is freely movable with respect to theguide rollers 17 and 18, so that the segments 21.

and 22 are not operated. On the other hand, however, the slotted bar 45,extending vertically upwardly from the slotted bar 16 and at rightangles thereto, has a guide wheel 46 movable therein, and which guidewheel 46 is secured to a bar 47 movable between guide rollers 48 and 49,and having a rack 50. Guide rollers 51 are arranged at each side of thevertical bar 45. Thus, the movement of the slotted bar 45 in thevertical direction permits the relative movement of this bar to theguide roller 46, without in any manner influencing the position of thebar 47 but any movement of the slotted bar 45 from the left to the rightor from the right to the left, carries with it the guide roller 46 andthe bar 47 in a manner so as to move the rack 50 from the right to theleft or from the left to the right. A pinion 53 engages the rack 50, andto this pinion is secured a pointer 54, which passes over an arc-shapedcontact member 55, similar to that indicated by 32. The bar 56 is formedof insulating material, and contact members 59 are provided in'spacedrelation thereon, and are adapted to be individually and successivelyengaged by the pointer 54. Wires 60 connect the contact members 59respectively with a plurality of electro-magnets 61 which are groundedupon a plate 61, arranged concentrically about a Wheel 62 mounted upon ashaft 62, upon which there is provided a bevel gear 63 which engages abevel gear 64 mounted upon a shaft 64", which is operatively connectedto-the frame of the embroidery machine or other mechanism (not shown),to be operated correspondingly to the movement of the frame 45..

The bar 55, which is of conducting material, is connected by a wire 57,in which there is arranged a source of electricity 60 to the plate f8upon which the electromagnets 61, are grounded by means of a connection58 provided on the arcuate plate 58. Thus the electro-magnets areindividually and successively energized as the pointer 54 moves from onecontact point 59 to the next. The armatures 62 are provided on theperiphery of the wheel 62 which are attracted by the energized elecstromagnets 61, moving from one to the next as they are successivelyenergized, thereby turning the wheel 62 Thus, by giving the slotted bar45 a movement from the left to the right, the corresponding movement ofthe frame of the embroidery machine results. Or by giving the slottedbar 45 a movement from the right to the left, a corresponding movementof the embroidery frame of the embroidery machine results.

It will thus be noticed that a very slight movement in either verticalor horizontal direction would be transmitted by the electro-magneticmeans to the frame of the embroidery machine, and it will be noticedthat a very slight movementonly is necessary to operate the pantographframe 12,

and its movement will control the electrical energy, so that theelectrical energy will cause the movement of the frame of the embroiderymachine instead of the physical energy necessary, as resulting from thehand of the operator, as heretofore.

One of the advantages of this construction is that the slightestmovement will be quickly transmitted and very little energy is necessaryto bring about this movement, and the operator will feel less fatiguedthan otherwise. i

The ratio between the design or sample on the board and the pointermoving over the electro-magnets, and the action transmitted by the gearsand the embroidery being worked on the machine, must be such that 7moving a frame under a pencil, or to operate anembroidery machine orjacquard card punching machine, either from the original design or anenlarged design, and by means of the electrical connections, several ofthese different operations may be carried out 7 simultaneously. Theseadvantageous fea tures will be readily appreciated when it is consideredthat enlarged designs foruse on the machines at present in use must bemade at an expense of hundreds of dollars in many cases.

In Fig. 2 an embodiment of the same idea is shown, in which a sample ofthe embroidery is worked 'upon a piece of material,

while the original design is being followed' At thepresent time, a

by the operator. new design is first worked on a piece of material byembroidery machines, and this is used for obtaining orders, after whichenlarged drawings, indicating each stitch, must be made for use on thelarge embroidery machines. With our invention, the sample maybe madefrom the original de sign, and atthe same time, an enlarged drawing ismade indicating each stitch, so that after orders areobtained from thesample, the embroidery made from-the draw ingwin be exactly asrepresented. This is very often not the case at present, becauseoneoperator makes thesample, and another the drawing, and as a result,the number and direction: of the stitches are changed. This form may beused in connection with jacquard card punching machines, so that whenthe design is completed, any-mistakes or omissions maybe noted on thesample,

and the card corrected before being used in the embroidery machine. 7 i

In this embodiment, a frame 80 is provided, which has slotted portion 81engaging a guide roller 82 on a bar 83, pivoted at 84:, which bar 83 isbent angularly into the shape as indicated by 85. The end of the bar 85is pivotally connected at 86 to a link 87, the lower endof which ispivotally connected with the sliding contact block member 88. Thiscontact member slidably engages a slot 89 in a bar 89, and has a pointer90 which passes over a plurality of contact pieces 91, all supported onthe bar 92. When the frame 80 is moved from the left to the right orfrom the right to the left, the bar 83, 85, and link 87 are'moved, andthe pointer 90 is moved along the contact pieces 91, and closeselectrical contact in the manner described in connection with Fig. 1.The frame 80 is provided at its upper end with a slotted portion 93,whlch is engaged by a roller-94 on a bar 95 pivoted to the pin 96, whichbar 95 extends into a portion 97 pivotally connected at 98 to a link 99which is pivotally connected at 100 to a sliding block 101 slidablyengaging a slot 1045" in a frame 104 and having a pointer 102 passingover a plurality of contact pieces 103 on the frame 104;. These contactpieces 103 are connected withsuitable electrical conections whichoperate with electro-magnets in the manner described in connection withFig. 1.

' Thus, any horizontal movement from the left to the right is translatedby: means of the bar 83, 85 and link 87 to the pointer 90, and verticalu or down movement is translated by the bars 95, 97, and 99 to thepointer 102. The frame is further provided with a magnifying glass 105,handle 106, a pointer 107, in a manner similar to that shown in Fig. 1,and acting in a like manner in respect to the design or sample 108. Theframe 80 has its slotted bar 93, as also an additional slotted bar 193,engaged by guide rollers 110, 111, 112 and 113, which are supported byarms 114, 115, 116, 117, pivoted at 118, at 119, at 120, and at 121, andwhich are provided with guide Wheels 123, 124:, 125, 126, over which arope or cable, or cord 127 passes. To the ends of this rope or cord 127weights 128 and 129 are secured, and these weights, together with therope or cable or cord 127, serve to hold or balance the frame 80 inposition, the rollers 110,111, 112 and 113 acting as an additional guidemeans so as to facilitate the movement of theframe as it is moved by thehandle 106, and as it performs its function of translating itsmechanical movement to the'pointer S8 and 101, the mechanical movementof which controls the electrical movement in the operations heretoforedescribed in connection with Fig. 1.

The frame 80 is also provided with a crossbar 130, which helps tosupport a piece of fabric 131, behind which is arranged a series ofembroidery needles (not shown) suflicient to work on the fabric duringthe movement of the frame a sample of the design.

By the device just described any inaccuracies found in the work producedby the embroidery machine may be readily corrected.

An enlarged drawing of a symmetrical design such as that shown in Fig. 3may be carried out from an original design of only one-half of thecomplete pattern, such as shown in full lines, by means of two enlargingpantograph apparatus, used instead of the usual embroidery frameconnected so as to be moved oppositely to each other by operation of theshafts 37 and 64 The drawing apparatus operated by our device preferablyconsists of a pair of frames each provided with a drawing point, andmovable horizontally and vertically by arms or gearing which arerespectively operated proportionately to the movement of the frames ofthe present invention by movement of the shafts 37 and 64; as abovepointed out.

The advantages have already been pointed out and are clear, in that avery facile operation results, with a minimum expenditure of energy bythe operator, and at the same time increasing the efliciency and addedpossibilities of the machine and its accurateness.

\Ve have illustrated and described preferred and satisfactory forms ofour invention, but it is obvious that changes. may be made. thereinwithin the spirit and scope thereof, as defined in the appended claims.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent 1. In a device. of the character described, thecombination of a pantograph frame, means operated by the. pantographframe, electrical means controlled by said lastnamed means, and meansoperated by said electrical means adapted to have a relative movementwith said pantograph frame.

2. In an embroidery machine, the combination of a pantograph frame,means operated by the pantograph frame, electrical means controlled bysaid last-named means, and means adapted to be connected With the frameof the embroidery machine operated by said electrical means.

3. In an embroidery machine, a frame having guide slots arrangedhorizontally and vertically, means engaging said vertical and horizontalslots, electromagnetic means set in operation by said engaging means,means operated by the electro-magnetic means, and means adapted toconnect said last-named means with the embroidery frame of theembroidery machine.

frame, electrical means controlled by said last-named means, and meansadapted to be connected with the frame of the embroidery machineoperated by said electrical means.

5. In an embroidery machine, a frame having guide slots, arrangedhorizontally and vertically, means engaging said vertical and horizontalslots, electro-magnetic means set in operation by said engaging means,and means operated by saidelectromagnetic means adapted to have arelative movement with said frame.

6. In an embroidery machine, the combination of a pantograph frame, asample embroidery frame carried by said pantograph frame, means operatedby the pantograph frame, electrical means controlled by said last-namedmean and means operated by said electrical means adapted to have arelative movement with said pantograph frame.

7. In a device of the character described, the combination of a frameadapted to be moved to follow the lines of a predetermined design to bereproduced, means controlled by the movement of said frame, electricalmeans controlled by said last named means, and means operated by saidelectrical means adapted to have a-relative movement With said frame.

In testimony, that we claim the foregoing as our lnvention, we havesigned our names in presence of two subscribing witnesses.

WALTER HUELLER. MAX KRAPP. Witnesses:

F. Hoes, Jos. BISBANO.

Cop es o this. pa ent may be bta d fo fi cents eachl y d s i g th C mmssi ner of atent Washington, D. 0.

